endoleak
Persistent blood flow into the aneurysm sac after endovascular repair, classified by location and mechanism.
Full Definition
An endoleak is the continued perfusion of the aneurysm sac following endovascular aortic repair (EVAR or TEVAR), representing incomplete exclusion of the aneurysm from systemic circulation. Endoleaks are classified into five types based on their location and mechanism: Type I (attachment site leaks), Type II (branch vessel backbleeding), Type III (graft defects), Type IV (graft porosity), and Type V (endotension without visible leak). Early detection and appropriate management of endoleaks are crucial for preventing aneurysm rupture and ensuring long-term success of endovascular repairs.
Usage
Usage note: Always specify the endoleak type (I-V) when documenting in clinical reports.
In Context
- "Post-procedural imaging revealed a Type II endoleak from the inferior mesenteric artery requiring observation." — Procedural report
- "The patient developed a Type I endoleak at the proximal attachment site necessitating balloon molding." — Complication note